/*
 * Copyright (c) 2003-2006 jMonkeyEngine
 * All rights reserved.
 *
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 * modification, are permitted provided that the following conditions are
 * met:
 *
 * * Redistributions of source code must retain the above copyright
 *   notice, this list of conditions and the following disclaimer.
 *
 * * Redistributions in binary form must reproduce the above copyright
 *   notice, this list of conditions and the following disclaimer in the
 *   documentation and/or other materials provided with the distribution.
 *
 * * Neither the name of 'jMonkeyEngine' nor the names of its contributors 
 *   may be used to endorse or promote products derived from this software 
 *   without specific prior written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR
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 */
package org.rpginventory.game;

import java.net.URL;

import javax.swing.ImageIcon;

import jmetest.input.TestThirdPersonController;
import jmetest.terrain.TestTerrain;

import com.jme.bounding.BoundingBox;
import com.jme.image.Texture;
import com.jme.light.DirectionalLight;
import com.jme.light.PointLight;
import com.jme.math.Vector3f;
import com.jme.renderer.ColorRGBA;
import com.jme.renderer.Renderer;
import com.jme.scene.Node;
import com.jme.scene.state.CullState;
import com.jme.scene.state.FogState;
import com.jme.scene.state.LightState;
import com.jme.scene.state.TextureState;
import com.jme.system.DisplaySystem;
import com.jme.util.TextureManager;
import com.jme.util.geom.Debugger;
import com.jmex.terrain.TerrainBlock;
import com.jmex.terrain.TerrainPage;
import com.jmex.terrain.util.FaultFractalHeightMap;
import com.jmex.terrain.util.ImageBasedHeightMap;
import com.jmex.terrain.util.ProceduralTextureGenerator;

//quickly rigged from jmetest.terrain.TestTerrain.java with a fixed heightMap instead of the random heightMap
// will be remade later

public class Terrain {

	private TerrainBlock tb;
	private TerrainPage page;

	private MyGameState gamestate;

	public void update() {
		tb.updateFromHeightMap();
	}

	public Terrain(MyGameState gamestate) {
		this.gamestate = gamestate;
		// setupTerrainBlock();
		setupTerrainPage();
	}

	protected void setupTerrainBlock() {
		Node rootNode = gamestate.getRootNode();

		DisplaySystem display = DisplaySystem.getDisplaySystem();

		LightState lightState = gamestate.getLightState();

		FogState fs = display.getRenderer().createFogState();
		fs.setEnabled(false);
		rootNode.setRenderState(fs);

		CullState cs = display.getRenderer().createCullState();
		cs.setCullMode(CullState.CS_BACK);
		cs.setEnabled(true);

		lightState.setTwoSidedLighting(true);
		Debugger.AUTO_NORMAL_RATIO = .02f;

		((PointLight) lightState.get(0)).setLocation(new Vector3f(100, 500, 50));
		// MidPointHeightMap heightMap = new MidPointHeightMap(128, 1.9f);
		URL grayScale = this.getClass().getClassLoader().getResource("jmetest/data/texture/terrain.png");

		ImageBasedHeightMap heightMap = new ImageBasedHeightMap(new ImageIcon(grayScale).getImage());

		Vector3f terrainScale = new Vector3f(5, 1, 5);
		tb = new TerrainBlock("Terrain", heightMap.getSize(), terrainScale, heightMap.getHeightMap(), new Vector3f(0,
				0, 0), false);
		// tb.setTrisPerPixel( 0.5f);
		tb.setDistanceTolerance(1.0f);
		tb.setDetailTexture(1, 16);
		tb.setModelBound(new BoundingBox());
		tb.updateModelBound();
		tb.setLocalTranslation(new Vector3f(0, 0, 0));
		rootNode.attachChild(tb);
		rootNode.setRenderState(cs);

		ProceduralTextureGenerator pt = new ProceduralTextureGenerator(heightMap);
		pt.addTexture(new ImageIcon(TestTerrain.class.getClassLoader().getResource("jmetest/data/texture/grassb.png")),
				-128, 0, 128);
		pt.addTexture(new ImageIcon(TestTerrain.class.getClassLoader().getResource("jmetest/data/texture/dirt.jpg")),
				0, 128, 255);
		pt.addTexture(
				new ImageIcon(TestTerrain.class.getClassLoader().getResource("jmetest/data/texture/highest.jpg")), 128,
				255, 384);

		pt.createTexture(64);

		TextureState ts = display.getRenderer().createTextureState();
		ts.setEnabled(true);

		Texture t1 = TextureManager.loadTexture(pt.getImageIcon().getImage(), Texture.MM_LINEAR_LINEAR,
				Texture.FM_LINEAR, true);
		t1.setStoreTexture(true);
		ts.setTexture(t1, 0);

		Texture t2 = TextureManager.loadTexture(TestTerrain.class.getClassLoader().getResource(
				"jmetest/data/texture/Detail.jpg"), Texture.MM_LINEAR_LINEAR, Texture.FM_LINEAR);

		ts.setTexture(t2, 1);
		t2.setWrap(Texture.WM_WRAP_S_WRAP_T);

		t1.setApply(Texture.AM_COMBINE);
		t1.setCombineFuncRGB(Texture.ACF_MODULATE);
		t1.setCombineSrc0RGB(Texture.ACS_TEXTURE);
		t1.setCombineOp0RGB(Texture.ACO_SRC_COLOR);
		t1.setCombineSrc1RGB(Texture.ACS_PRIMARY_COLOR);
		t1.setCombineOp1RGB(Texture.ACO_SRC_COLOR);
		t1.setCombineScaleRGB(1.0f);

		t2.setApply(Texture.AM_COMBINE);
		t2.setCombineFuncRGB(Texture.ACF_ADD_SIGNED);
		t2.setCombineSrc0RGB(Texture.ACS_TEXTURE);
		t2.setCombineOp0RGB(Texture.ACO_SRC_COLOR);
		t2.setCombineSrc1RGB(Texture.ACS_PREVIOUS);
		t2.setCombineOp1RGB(Texture.ACO_SRC_COLOR);
		t2.setCombineScaleRGB(1.0f);
		rootNode.setRenderState(ts);

		rootNode.setRenderQueueMode(Renderer.QUEUE_OPAQUE);
		// fpsNode.setRenderQueueMode(Renderer.QUEUE_OPAQUE);

	}

	private void setupTerrainPage() {
		  
			Node rootNode = gamestate.getRootNode();

			DisplaySystem display = DisplaySystem.getDisplaySystem();

			LightState lightState = gamestate.getLightState();
		  
	        rootNode.setRenderQueueMode(Renderer.QUEUE_OPAQUE);
	       // fpsNode.setRenderQueueMode(Renderer.QUEUE_ORTHO);

// display.getRenderer().setBackgroundColor( new ColorRGBA(0.5f, 0.5f, 0.5f, 1));

	        DirectionalLight dr = new DirectionalLight();
	        dr.setEnabled(true);
	        dr.setDiffuse(new ColorRGBA(1.0f, 1.0f, 1.0f, 1.0f));
	        dr.setAmbient(new ColorRGBA(0.5f, 0.5f, 0.5f, 1.0f));
	        dr.setDirection(new Vector3f(0.5f, -0.5f, 0));

	        CullState cs = display.getRenderer().createCullState();
	        cs.setCullMode(CullState.CS_BACK);
	        cs.setEnabled(true);
	        rootNode.setRenderState(cs);

	        lightState.detachAll();
	        lightState.attach(dr);

	        FaultFractalHeightMap heightMap = new FaultFractalHeightMap(257, 32, 0,
	                255, 0.75f);
	        Vector3f terrainScale = new Vector3f(10, 1, 10);
	        heightMap.setHeightScale(0.001f);
	        page = new TerrainPage("Terrain", 33, heightMap.getSize(),
	                terrainScale, heightMap.getHeightMap(), false);

	        page.setDetailTexture(1, 16);
	        rootNode.attachChild(page);

	        ProceduralTextureGenerator pt = new ProceduralTextureGenerator(
	                heightMap);
	        pt.addTexture(new ImageIcon(TestTerrain.class.getClassLoader()
	                .getResource("jmetest/data/texture/grassb.png")), -128, 0, 128);
	        pt.addTexture(new ImageIcon(TestTerrain.class.getClassLoader()
	                .getResource("jmetest/data/texture/dirt.jpg")), 0, 128, 255);
	        pt.addTexture(new ImageIcon(TestTerrain.class.getClassLoader()
	                .getResource("jmetest/data/texture/highest.jpg")), 128, 255,
	                384);

	        pt.createTexture(512);

	        TextureState ts = display.getRenderer().createTextureState();
	        ts.setEnabled(true);
	        Texture t1 = TextureManager.loadTexture(pt.getImageIcon().getImage(),
	                Texture.MM_LINEAR_LINEAR, Texture.FM_LINEAR, true);
	        ts.setTexture(t1, 0);

	        Texture t2 = TextureManager.loadTexture(TestThirdPersonController.class
	                .getClassLoader()
	                .getResource("jmetest/data/texture/Detail.jpg"),
	                Texture.MM_LINEAR_LINEAR, Texture.FM_LINEAR);
	        ts.setTexture(t2, 1);
	        t2.setWrap(Texture.WM_WRAP_S_WRAP_T);

	        t1.setApply(Texture.AM_COMBINE);
	        t1.setCombineFuncRGB(Texture.ACF_MODULATE);
	        t1.setCombineSrc0RGB(Texture.ACS_TEXTURE);
	        t1.setCombineOp0RGB(Texture.ACO_SRC_COLOR);
	        t1.setCombineSrc1RGB(Texture.ACS_PRIMARY_COLOR);
	        t1.setCombineOp1RGB(Texture.ACO_SRC_COLOR);
	        t1.setCombineScaleRGB(1.0f);

	        t2.setApply(Texture.AM_COMBINE);
	        t2.setCombineFuncRGB(Texture.ACF_ADD_SIGNED);
	        t2.setCombineSrc0RGB(Texture.ACS_TEXTURE);
	        t2.setCombineOp0RGB(Texture.ACO_SRC_COLOR);
	        t2.setCombineSrc1RGB(Texture.ACS_PREVIOUS);
	        t2.setCombineOp1RGB(Texture.ACO_SRC_COLOR);
	        t2.setCombineScaleRGB(1.0f);
	        rootNode.setRenderState(ts);

	        FogState fs = display.getRenderer().createFogState();
	        fs.setDensity(0.5f);
	        fs.setEnabled(true);
	        fs.setColor(new ColorRGBA(0.5f, 0.5f, 0.5f, 0.5f));
	        fs.setEnd(1000);
	        fs.setStart(500);
	        fs.setDensityFunction(FogState.DF_LINEAR);
	        fs.setApplyFunction(FogState.AF_PER_VERTEX);
	        rootNode.setRenderState(fs);
	        
	        gamestate.setTerrainPage(page);
	    }

	public MyGameState getGamestate() {
		return gamestate;
	}

	public void setGamestate(MyGameState gamestate) {
		this.gamestate = gamestate;
	}
}
